QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Campo, CA

No earthquake was likely felt in Campo in the 24 hours to 8:28 am PST (16:28 UTC). The last one was M 4.9, 122 km (76 mi) E, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Campo

This page: a magnitude 1.7 earthquake was recorded 26 km (16 mi) east of Campo, CA, at 6:56 pm PST on 13 February 2023 (02:56 UTC), 11 km deep.

USGS: 23km SW of Ocotillo, CA

91 km (57 mi) ESE of San Diego, CA

6:56 pm PST, Feb 13, 2023 · · 11 km deep · released about 10 lb of TNT

10 km30 km60 km120 km N San Diego County 71 kmImperial County 91 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
6:56 pm PST on 13 February 2023 ()
Where
26 km (16 mi) east of Campo, CA · earthquakes near Campo
Magnitude
M 1.7 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
San Diego County, 71 km NW
Nearest mapped fault
Elsinore fault, 25 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1367 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 5 km (3 mi) from the epicentre. In Campo, 26 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km since 2016 was M 4.5 on 2020-05-10 — about 19,000 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.7 8km ESE of Ocotillo, CA · 28 km ENE of this epicentre
  2. 5.2 21km NW of Ocotillo, CA · 29 km N of this epicentre
  3. 5.0 26km NE of Pine Valley, CA · 41 km NNW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 32.6160, -116.1910. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 71 km (44 mi) NW earthquakes near San Diego County
Imperial County, CA 91 km (57 mi) ENE earthquakes near Imperial County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

51 earthquakes have been recorded within 50 km since this one.

  1. 1.6 17km WNW of Progreso, B.C., MX
  2. 1.5 24km SW of Ocotillo Wells, CA
  3. 1.8 20km ENE of Pine Valley, CA
  4. 2.4 26km ENE of Pine Valley, CA
  5. 2.2 20km ESE of Ocotillo, CA
  6. 2.9 26km ENE of Pine Valley, CA
  7. 1.6 18km SE of Ocotillo Wells, CA
  8. 1.6 18km SE of Ocotillo Wells, CA
  9. 1.8 25km ENE of Pine Valley, CA
  10. 2.1 16km ENE of Campo, CA
  11. 1.8 17km SE of Ocotillo Wells, CA
  12. 1.6 18km SE of Ocotillo Wells, CA
  13. 2.0 18km SE of Ocotillo Wells, CA
  14. 1.9 15km W of Progreso, B.C., MX
  15. 2.0 14km W of Progreso, B.C., MX

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.